Stop/Start again a few thoughts

Faults and Technical chat for the Jaguar XE
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PhilB
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Re: Stop/Start again a few thoughts

Post by PhilB » Tue May 07, 2019 11:23 am

Vespa wrote:
Tue May 07, 2019 11:09 am
I would think every jag dealer has raised this with Jaguar as they all have literally hundreds of cars with the same S/S complaint
Exactly.
There has been a recent SSM/Bulletin on it too.
Current: 2017 XE S 380, Storm grey Pics black pack and a few more bits.
Previous: 2015 XE S 340, British Racing Green.


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PhilB
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Re: Stop/Start again a few thoughts

Post by PhilB » Tue May 07, 2019 11:49 am

Mike Rometer wrote:
Tue May 07, 2019 10:02 am
I think I've shot my own theory, about it being alternator related, in the foot. I've been checking the standing voltage every time I enter or leave the car and they drop dramatically within about 30 secs of switch off. I've switched off at 13.2v and watched it drop to 12.6 in around that time. The most obvious cause would be something not switching off (we know that) but that drop is quite heavy and would require a large amperage to cause it. Still looking and thinking! :?
It may be worth having a look back through this epic saga as I seem to recall someone posting the details of what does what when the car shuts down in relation to the battery management modules etc.
Current: 2017 XE S 380, Storm grey Pics black pack and a few more bits.
Previous: 2015 XE S 340, British Racing Green.


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Mike Rometer
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Re: Stop/Start again a few thoughts

Post by Mike Rometer » Tue May 07, 2019 11:53 am

PhilB wrote:
Tue May 07, 2019 11:49 am
Mike Rometer wrote:
Tue May 07, 2019 10:02 am
I think I've shot my own theory, about it being alternator related, in the foot. I've been checking the standing voltage every time I enter or leave the car and they drop dramatically within about 30 secs of switch off. I've switched off at 13.2v and watched it drop to 12.6 in around that time. The most obvious cause would be something not switching off (we know that) but that drop is quite heavy and would require a large amperage to cause it. Still looking and thinking! :?
It may be worth having a look back through this epic saga as I seem to recall someone posting the details of what does what when the car shuts down in relation to the battery management modules etc.
I have read through Phil, but lost the plot about halfway (nearly as good as Line of Duty :lol: :lol: :lol: ). I've looked back again to see what the parameters are, but I think that's in the handbook anyway. For my money now I'm leaning to perhaps the GWM update being needed before I can make further progress.
Jag No 3. 2 Litre petrol Prestige 200. Italian Racing Red. 65 plate

My other vehicle is coal fired. 8-) (very lo-tech)


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PhilB
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Re: Stop/Start again a few thoughts

Post by PhilB » Tue May 07, 2019 11:59 am

Found another thread with what seems to be plenty of techy stuff about it (on page 4).
(I've just locked it to prevent another S/S topic coming back! :D )
viewtopic.php?f=8&t=7251&start=30
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Vespa
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Re: Stop/Start again a few thoughts

Post by Vespa » Tue May 07, 2019 12:00 pm

Just for interest drive the car then shut off the engine and sit there. It takes about 10 minutes for many systems to shut down and you will hear various fans and clicking noises with intermittant short displays on the instrument panel. I doubt if this shows when locked up and the vehicle left but I was stood next to mine last week chatting when I got home and locked it up and could hear fans clicking in and out for a few minutes as I stood by it. That would probably explain the voltage drop. Have a look at my last post in the Who has a CTek charger thread. Interesting thing with my old battery this week.
180 diesel XE R Sport, with many extras :D


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PhilB
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Re: Stop/Start again a few thoughts

Post by PhilB » Tue May 07, 2019 12:05 pm

On that link I just posted above, it says if the car isn't double-locked then it can take up to 8 hours to shut down.
Also leaving the keys within 5 metres can cause drain too.
Current: 2017 XE S 380, Storm grey Pics black pack and a few more bits.
Previous: 2015 XE S 340, British Racing Green.


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Vespa
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Re: Stop/Start again a few thoughts

Post by Vespa » Tue May 07, 2019 12:11 pm

When I read that 5 m info I kept my keys away from the car. The old battery still wouldn't power the stop start. Since the new battery ws fitted the keys stay in my jacket pocket abot 12ft away from the car and so far it has worked every time. I still have that occasional wiper problem though with no reasoning behind it or fault codes.
180 diesel XE R Sport, with many extras :D


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Mike Rometer
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Re: Stop/Start again a few thoughts

Post by Mike Rometer » Sat May 11, 2019 3:20 pm

See below. Double post???
Last edited by Mike Rometer on Sat May 11, 2019 3:22 pm, edited 1 time in total.
Jag No 3. 2 Litre petrol Prestige 200. Italian Racing Red. 65 plate

My other vehicle is coal fired. 8-) (very lo-tech)


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Mike Rometer
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Re: Stop/Start again a few thoughts

Post by Mike Rometer » Sat May 11, 2019 3:21 pm

Last night I drove to N0 1 D's, it never worked. Stopped and locked for 5 mins to pick her and S-i-L up. Drove out, and it worked at the end of her street and the next stop and didn't work again (20 miles), nor on the way home 3 hours later. It has no rhyme or reason, except perhaps it worked to impress S-i-L. :mrgreen: :lol:
Jag No 3. 2 Litre petrol Prestige 200. Italian Racing Red. 65 plate

My other vehicle is coal fired. 8-) (very lo-tech)


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Repairman
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Re: Stop/Start again a few thoughts

Post by Repairman » Sat May 11, 2019 6:17 pm

totally agree, mine worked today for 3 stops on journey out, and not since, this is 1st time since January when westover charged battery, frightens you when it works and you are not expecting it.
XE R Sport 180 2.0D in Italian Racing Red


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